EP3581013B1 - Anordnung für ein mähwerk einer mäh- oder häckselmaschine, ersatz-schneidwerkzeug sowie mähwerk - Google Patents

Anordnung für ein mähwerk einer mäh- oder häckselmaschine, ersatz-schneidwerkzeug sowie mähwerk Download PDF

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Publication number
EP3581013B1
EP3581013B1 EP18177596.6A EP18177596A EP3581013B1 EP 3581013 B1 EP3581013 B1 EP 3581013B1 EP 18177596 A EP18177596 A EP 18177596A EP 3581013 B1 EP3581013 B1 EP 3581013B1
Authority
EP
European Patent Office
Prior art keywords
cutting tool
mounting bolt
carrier
tool
rotation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18177596.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3581013A1 (de
Inventor
Rasmus Elmelund Nielsen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kverneland Group Kerteminde AS
Original Assignee
Kverneland Group Kerteminde AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to PL18177596T priority Critical patent/PL3581013T3/pl
Application filed by Kverneland Group Kerteminde AS filed Critical Kverneland Group Kerteminde AS
Priority to ES18177596T priority patent/ES2846423T3/es
Priority to SI201830201T priority patent/SI3581013T1/sl
Priority to DK18177596.6T priority patent/DK3581013T3/da
Priority to EP18177596.6A priority patent/EP3581013B1/de
Priority to CA3045448A priority patent/CA3045448A1/en
Priority to AU2019204037A priority patent/AU2019204037B2/en
Priority to US16/438,698 priority patent/US20190380268A1/en
Publication of EP3581013A1 publication Critical patent/EP3581013A1/de
Application granted granted Critical
Publication of EP3581013B1 publication Critical patent/EP3581013B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
    • A01D34/73—Cutting apparatus
    • A01D34/733—Cutting-blade mounting means
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
    • A01D34/73—Cutting apparatus
    • A01D34/736—Flail type
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F29/00—Cutting apparatus specially adapted for cutting hay, straw or the like
    • A01F29/09—Details
    • A01F29/095—Mounting or adjusting of knives

Definitions

  • the invention relates to an arrangement for a mower of a mower or chopper, a replacement cutting tool and a mower.
  • Mowing or chopping machines are used in agricultural or horticultural operations to mow and / or chop down plants that have grown in the ground. Such plants include, in particular, grass.
  • the machines are equipped with a mower that combines the components required for mowing / chopping the plants.
  • the cutting tools used to cut the plants are arranged on a tool carrier which is usually set in rotation during operation.
  • a tool carrier is from the document EP 0 486 459 B1 known.
  • the tool carrier described there provides for the cutting tools to be mounted by inserting a mounting bolt received on the cutting tool into an elongated hole formed on the tool carrier.
  • the mounting bolt received on the cutting tool is fastened on the upper side of the tool carrier with the aid of a securing component which has an elongated hole and which is narrowed on one side.
  • the cutting tool can pivot about an axis of rotation formed with the aid of the mounting bolt, in particular when the cutting tool encounters an obstacle.
  • a stop is formed radially on the inside of the assembly bolt, which limits this pivoting movement around the assembly bolt of the cutting tool.
  • EP 2 522 209 B1 describes an arrangement for a mower of a mower or chopper with a tool carrier which is formed with a carrier disk and is configured to be rotatably mounted on a mower of a mower or chopper about an axis of rotation.
  • the arrangement includes cutting tools, each a cutting knife located radially outward to the axis of rotation and a holding section located radially inward to the axis of rotation are formed and detachably mounted on the carrier disk in an associated carrier section, with an elongated hole extending radially to the axis of rotation being formed in the associated carrier sections, into which in an end region proximal to the axis of rotation a mounting bolt used for mounting the cutting tool on the tool carrier can be inserted, and the elongated hole has engagement sections at least in an end area distal to the axis of rotation, which are formed along an elongated hole edge and engage in a constriction on the mounting bolt when the mounting bolt received in the holding section of the cutting tool is at Mounting the cutting tool is displaced from the proximal end region of the elongated hole into the region of the elongated hole with the engagement sections.
  • opposing projections are formed which extend in the longitudinal direction of the elongated hole and which limit or essentially completely prevent rotation of the cutting tool around the mounting bolt, at least when the mounting bolt received in the holding section of the cutting tool is arranged in a radially inner elongated hole half .
  • a lawnmower is known in which cutting blades are mounted on a rotating tool carrier by means of mounting bolts.
  • the tool carrier forms a carrier disk which rotates during operation so that the cutting blades revolve around an axis of rotation.
  • a respective mounting bolt is not detachably mounted on the cutting tools.
  • the object of the invention is to provide an arrangement for a mower of a mowing or chopping machine, a replacement cutting tool and a mower, with which the operational safety is improved, in particular with regard to an unintentional detachment of a cutting tool from the tool carrier during operation.
  • Claim 13 relates to a replacement cutting tool. Furthermore, a mower for a mowing or chopping machine according to independent claim 14 is provided. Refinements are the subject of the dependent subclaims.
  • an arrangement for a mower of a mower or chopper is provided with a tool carrier which is formed with a carrier disk and is configured to be rotatably mounted on a mower of a mower or chopper about an axis of rotation.
  • the arrangement has cutting tools which are each formed with a cutting knife located radially on the outside of the axis of rotation and a holding section located radially on the inside of the axis of rotation and released in an associated carrier portion bar are mounted on the carrier disk, the cutting tools being mounted on the tool carrier in each case by means of a mounting bolt.
  • the mounting bolt is not detachably mounted on the cutting tools.
  • the non-detachable assembly or arrangement of the assembly bolt causes a non-detachable (non-destructive) attachment with a cutting tool, for example a cutting knife, and an assembly bolt mounted thereon.
  • the assembly bolt cannot be separated from the cutting tool without at least partially destroying the assembly bolt and / or the cutting tool. This prevents one of the two components from being exchanged in the event of material wear of the cutting tool and / or assembly bolt in order to then continue to use the exchanged component with the old and in this respect also at least partially worn other component. There would then be the risk of the mower no longer operating safely.
  • the mounting bolt In a non-mounted position of the cutting tool, the mounting bolt is arranged in an associated opening of the cutting tool so that it can be displaced relative to the latter. In this way, a loose or movable assembly of the assembly bolt in the opening (bolt assembly opening) can be formed.
  • the opening can be an elongated or round hole.
  • the mounting bolt In the non-mounted position of the cutting tool, the mounting bolt can be arranged in the associated opening of the cutting tool such that it can be tilted relative to the cutting tool surface.
  • the mounting bolt can be tiltable relative to its longitudinal axis, for example.
  • Opposite head ends of the assembly bolt, between which a constriction is arranged, can each have a head surface which is larger than an opening surface of the opening in which the assembly bolt is arranged.
  • the mounting bolt can be made in several pieces.
  • the multiple bolt pieces can be joined to one another in order to non-releasably fasten the assembly bolt to the respective cutting tool.
  • sleeve components can be connected to one another in a non-detachable manner by means of a core pin or bolt.
  • the sleeve components can be in the area of the constriction of the mounting bolt be arranged opposite one another.
  • the head ends can be formed in the region of end sections which are formed distally on the sleeve components with respect to the opening of the cutting tool.
  • the mounting bolt can be non-releasably mounted on the cutting tool by means of a connection selected from the following group: riveted connection, welded connection, adhesive connection, hot-formed connection, cold-formed connection and soldered connection.
  • An elongated hole extending radially to the axis of rotation can be formed in the assigned carrier sections, into which a mounting bolt used to mount the cutting tool on the tool carrier can be inserted in an area proximal to the axis of rotation, wherein the elongated hole can have engagement sections at least in an area distal to the axis of rotation are formed along an elongated hole edge and engage in the constriction on the mounting bolt when the mounting bolt received in the holding section of the cutting tool is displaced from the proximal area of the elongated hole into the area of the elongated hole with the engaging sections during assembly of the cutting tool.
  • the projections extending in the longitudinal direction of the elongated hole secure the cutting tool from accidentally being thrown out, i.e. loosening from the tool carrier, especially when the cutting tool encounters an obstacle during operation which causes a radially inward displacement of the cutting tool along the elongated hole. This unintentional displacement of the cutting tool radially inward during operation, i.e.
  • the cutting tool is additionally secured against accidentally being thrown out, in particular if the cutting tool hits an obstacle hard during operation.
  • the projections assume a guiding function during the assembly and disassembly of the cutting tool, in that at least the holding section of the cutting tool is guided between them when the assembly bolt is moved in the elongated hole during assembly / disassembly.
  • the projections are preferably formed in a region which, lying radially on the inside, adjoins the elongated hole section proximal to the axis of rotation.
  • partial or complete overlapping with at least part of the elongated hole can also be provided.
  • the elongated hole can be formed on the underside of the tool carrier, for example a flat steel component.
  • the elongated hole is formed with the aid of a functional component applied to the underside of the carrier disk.
  • a protruding bolt head of the assembly bolt can then be guided in a space between the carrier disk and the functional element.
  • the elongated hole is open in the area of an end that is proximal to the axis of rotation.
  • the assembly bolt for example, can then be inserted into the elongated hole through the open end.
  • the engagement sections of the elongated hole can then, if necessary, extend over the entire length of the elongated hole.
  • the projections are preferably also arranged on the underside of the tool.
  • a further elongated hole is formed on the upper side of the tool carrier, which at least in sections overlaps with the elongated hole and receives a bolt end of the assembly bolt in a guiding manner, in particular in a laterally guiding manner.
  • the elongated hole can be formed in the carrier disk.
  • the bolt end of the mounting bolt can be completely or partially received in the elongated hole.
  • the bolt end is preferably guided in the further elongated hole along an outer circumference of the bolt.
  • the further elongated hole has an essentially constant hole width over its length.
  • One embodiment can provide that ends of the projections distal to the axis of rotation with associated corner regions proximal to the axis of rotation in the holding section of the cutting tool for the cutting tool form a rotation-inhibiting mechanism that secures the cutting tool in a position of use during mowing or chopping operation with regard to the rotation of the cutting tool around the mounting bolt which, when a threshold force acting on the cutting tool during mowing or chopping operation is exceeded, releases a rotation of the cutting tool out of the use position.
  • the anti-rotation mechanism secures the cutting tool against rotation out of the use position by supporting one another on one or both sides of the proximal corner area on the holding section of the cutting tool and the distal end of the projections, whereby a limited pivoting movement can be provided if necessary. If the cutting tool encounters an obstacle in the mowing or chopping operation, a force acts on the cutting tool that is greater than the resistance when cutting the plants, so that the rotation inhibiting mechanism is overcome, whereby a rotation of the cutting tool out of the use position is released becomes. This prevents damage to the cutting tool when it hits an obstacle lightly. The cutting tool can avoid such slight obstacles by overcoming the anti-rotation mechanism.
  • the cutting tool is often additionally displaced radially inward towards the axis of rotation.
  • the projections extending in the longitudinal direction of the elongated hole then act as a safeguard for the cutting tool.
  • the projections can be formed by means of a U-shaped attachment element arranged on the underside of the tool carrier.
  • the attachment element can be produced by means of a U-tube section.
  • the attachment element is preferably mounted on the underside of the carrier disk, preferably by means of welding.
  • the projections are formed in an end region that is proximal to the axis of rotation and sloping towards the axis of rotation.
  • the projections can be formed sloping radially outwards.
  • At least three carrier sections can be formed circumferentially and essentially equally spaced on the tool carrier disk.
  • three tool carrier sections with a respective cutting tool can be provided, which are arranged circumferentially at a distance of approximately 120 °.
  • the cutting tools can be assembled and disassembled on the tool carrier without assembly tools.
  • assembly tool-free handling for assembling and disassembling the cutting tool is given, for example, when the cutting tool with the mounting bolt received on it only has to be displaced radially outward away from the axis of rotation (assembly) and radially inward toward the axis of rotation (disassembly)
  • the engaging sections engaging in the constriction of the assembly bolt secure the cutting tool against unintentional loosening in the position radially outer to the axis of rotation.
  • the cutting tools can be mounted on the tool carrier in a self-aligning manner in the mowing or chopping operation. Due to the ability of the cutting tool to rotate about the assembly bolt, the cutting tool aligns itself essentially in the longitudinal direction of the elongated hole when the carrier disk rotates about the axis of rotation. In addition, the alignment of the cutting tool is preferably supported due to the interaction with the projections.
  • the cutting tools are stored securely on the tool carrier in the use position during the mowing or chopping operation.
  • a self-locking is given in particular by the fact that the assembly bolt together with the cutting tool is always pressed radially outward during operation due to the rotation of the carrier disk.
  • Fig. 1 shows a schematic representation of an arrangement for a mowing or chopping machine with a tool carrier 1, which is formed with a carrier disk 2.
  • the carrier disk 2 has an assembly section 3, which defines an axis of rotation, with bores 4 which are used to accommodate screws or bolts when the tool carrier 1 is assembled in a mower.
  • Fig. 2 shows a schematic representation of the arrangement from Fig. 1 from diagonally below.
  • the cutting tools 6 each have a holding section 7 on which a cutting knife 8 is formed, lying radially on the outside of the axis of rotation.
  • the cutting tools 6 are mounted in the associated carrier section 5 with the aid of a mounting bolt 9 which forms a local axis of rotation for the cutting tool 6.
  • the cutting tools align themselves automatically in the in Fig. 2 illustrated manner.
  • Fig. 3 shows the arrangement Fig. 1 diagonally from below. Out Fig. 3 it results that in the carrier section 5 in which the cutting tools 6 are mounted, a flat component 10 with an elongated hole 11 is arranged on the underside of the carrier disk 2, which is open at its end 12 proximal to the axis of rotation of the carrier disk 2.
  • Fig. 4 shows a schematic perspective illustration of the cutting tool 6 with the mounting bolt 9 mounted thereon. This is non-detachably mounted in an associated opening 6a.
  • Fig. 5 shows a schematic perspective illustration of the arrangement with cutting tool 6 and assembly bolt 9 in section during assembly of assembly bolt 9 and after completion of assembly (see Figure below).
  • the mounting bolt 9 is formed with an upper and a lower sleeve component 9a, 9b.
  • the upper and lower sleeve components 9a, 9b lie opposite one another in the region of the opening 6a when the mounting bolt 9 is arranged essentially centrally in the opening 6a with respect to its longitudinal extension.
  • Bolt head ends 9c, 9d are formed on the upper and lower sleeve components 9a, 9b, the outer circumference of which is larger than an opening area 6b of the opening 6a, so that the assembly bolt 9 is not detachably arranged in the opening 6a after assembly.
  • the opening area 6b of the opening 6a is larger than the mounting bolt 9 in the central area, so that the mounting bolt 9 is loosely received in the opening 6a, for example can be tilted relative to its longitudinal axis.
  • An inner opening 9e of the upper and lower sleeve components 9a, 9b widens conically outward.
  • a core pin or bolt 13 is introduced here in a form-fitting manner (cf. lower illustration in Fig. 5 ) in order to secure the assembly bolt 9 non-releasably to the cutting tool 6.
  • Fig. 6 shows the arrangements Fig. 5 from the front and in the cut.
  • Fig. 7 shows a schematic representation in section when the arrangement with cutting tool 6 and mounting bolt 9 is mounted on the carrier disk 2.
  • a section of the mounting bolt 9 which is inserted into a bore 15 in the cutting tool 6 and is provided with a constriction 16 (cf. Fig. 5 and 6th ), pushed into the elongated hole 11 via the open proximal end 14, so that lateral engagement sections 17 of the elongated hole 11 engage in the constriction 16.
  • Fig. 9 shows a position of the cutting tool 6 in which the assembly bolt 9 is just arranged in or in front of the open proximal end 14 of the elongated hole 11.
  • Fig. 9 shows the newly assembled cutting tool 6 in the use position.
  • the cutting tool 6 was thus moved radially outwardly along the elongated hole 11 with respect to the axis of rotation of the carrier disk 2, the mounting bolt 9 being guided along the elongated hole 11.
  • the result is that a bolt end 18 of the mounting bolt 9 that is thicker with regard to the constriction 16 is guided in a further elongated hole 19 on the upper side of the carrier disk 2.
  • the ring 30 can be detachably or non-detachably mounted on the mounting bolt 9.
  • the ring 30 is partially received in an associated groove 31 which extends circumferentially on the mounting bolt 9.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Harvester Elements (AREA)
EP18177596.6A 2018-06-13 2018-06-13 Anordnung für ein mähwerk einer mäh- oder häckselmaschine, ersatz-schneidwerkzeug sowie mähwerk Active EP3581013B1 (de)

Priority Applications (8)

Application Number Priority Date Filing Date Title
ES18177596T ES2846423T3 (es) 2018-06-13 2018-06-13 Disposición para un mecanismo segador de una segadora o trituradora, herramienta de corte de sustitución, así como mecanismo segador
SI201830201T SI3581013T1 (sl) 2018-06-13 2018-06-13 Razmestitev za kosilno pripravo kosilnega ali rezalnega stroja, nadomestno rezalno orodje in pa kosilna priprava
DK18177596.6T DK3581013T3 (da) 2018-06-13 2018-06-13 Anordning til et slåværk til en slå- eller hakkemaskine, reserveskæreværktøj såvel som slåværk
EP18177596.6A EP3581013B1 (de) 2018-06-13 2018-06-13 Anordnung für ein mähwerk einer mäh- oder häckselmaschine, ersatz-schneidwerkzeug sowie mähwerk
PL18177596T PL3581013T3 (pl) 2018-06-13 2018-06-13 Układ do mechanizmu tnącego żniwiarki lub sieczkarki, zamienne narzędzie tnące i mechanizm tnący
CA3045448A CA3045448A1 (en) 2018-06-13 2019-06-07 Assembly for a mower of a mowing or chopping machine, replacement cutting tool and mower
AU2019204037A AU2019204037B2 (en) 2018-06-13 2019-06-10 Assembly for a mower of a mowing or chopping machine, replacement cutting tool and mower
US16/438,698 US20190380268A1 (en) 2018-06-13 2019-06-12 Assembly for a mower of a mowing or chopping machine, replacement cutting tool and mower

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18177596.6A EP3581013B1 (de) 2018-06-13 2018-06-13 Anordnung für ein mähwerk einer mäh- oder häckselmaschine, ersatz-schneidwerkzeug sowie mähwerk

Publications (2)

Publication Number Publication Date
EP3581013A1 EP3581013A1 (de) 2019-12-18
EP3581013B1 true EP3581013B1 (de) 2020-11-18

Family

ID=62636032

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18177596.6A Active EP3581013B1 (de) 2018-06-13 2018-06-13 Anordnung für ein mähwerk einer mäh- oder häckselmaschine, ersatz-schneidwerkzeug sowie mähwerk

Country Status (8)

Country Link
US (1) US20190380268A1 (da)
EP (1) EP3581013B1 (da)
AU (1) AU2019204037B2 (da)
CA (1) CA3045448A1 (da)
DK (1) DK3581013T3 (da)
ES (1) ES2846423T3 (da)
PL (1) PL3581013T3 (da)
SI (1) SI3581013T1 (da)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD949206S1 (en) 2020-12-16 2022-04-19 Mtd Products Inc Cutting blade

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3360405B1 (de) * 2017-02-08 2021-04-14 Andreas Stihl AG & Co. KG Schneidkopf für eine motorsense
SE544260C2 (en) * 2018-07-12 2022-03-15 Husqvarna Ab Robotic lawnmower cutting arrangement with cutting blade comprising a cutting portion axially below a blade carrier interface, cutting blade, robotic lawnmower, method of operating a robotic lawnmower, and use of these
US11185012B2 (en) * 2019-10-03 2021-11-30 Deere & Company Agricultural cutting mechanism with quick-change blade

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US3320732A (en) * 1965-02-17 1967-05-23 Ralph D Kirk Cutting blade assembly for rotary lawn mowers and the like
DE3105003A1 (de) * 1981-02-12 1982-08-19 Fa. Andreas Stihl, 7050 Waiblingen Schneidkopf fuer ein freischneidegeraet
AT397172B (de) 1990-11-16 1994-02-25 Jetzinger Franz Werkzeughalterung für mäh- bzw. häckselmaschinen
DK1588599T3 (da) 2004-04-21 2009-08-24 Lely Entpr Ag En slåindretning, en knivadapter til en sådan slåindretning og en holder til en sådan slåindretning
KR200359485Y1 (ko) * 2004-05-31 2004-08-21 이석진 예취기용 회전칼
WO2006080711A1 (en) * 2004-10-08 2006-08-03 Ju Cheol Park Magic rolling cutter
US7647758B1 (en) * 2008-10-30 2010-01-19 Cnh America Llc Device for reducing debris accumulation in a rotary cutterhead
CN102293090B (zh) * 2010-06-24 2013-11-13 南京德朔实业有限公司 适用于旋转式植被切割机的工作头
DE202011050089U1 (de) 2011-05-10 2011-06-30 Kverneland Group Kerteminde As Anordnung für ein Mähwerk einer Mäh- oder Häckselmaschine sowie Mähwerk
EP2818033B1 (en) * 2013-06-28 2016-08-10 Robert Bosch Gmbh Cutter and rotary support head
KR101998830B1 (ko) * 2017-04-19 2019-07-10 정태근 양면 사용이 가능한 예초기 칼날
JP7025902B2 (ja) * 2017-11-22 2022-02-25 株式会社マキタ カッタユニット

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD949206S1 (en) 2020-12-16 2022-04-19 Mtd Products Inc Cutting blade

Also Published As

Publication number Publication date
EP3581013A1 (de) 2019-12-18
CA3045448A1 (en) 2019-12-13
AU2019204037A1 (en) 2020-01-16
US20190380268A1 (en) 2019-12-19
AU2019204037B2 (en) 2024-05-09
PL3581013T3 (pl) 2021-05-31
SI3581013T1 (sl) 2021-03-31
ES2846423T3 (es) 2021-07-28
DK3581013T3 (da) 2021-02-15

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